56161520005152 has 48 divisors (see below), whose sum is σ = 147561898599360. Its totient is φ = 18702994467072.

The previous prime is 56161520005111. The next prime is 56161520005189. The reversal of 56161520005152 is 25150002516165.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 56161520005152.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273524988 + ... + 273730235.

It is an arithmetic number, because the mean of its divisors is an integer number (3074206220820).

Almost surely, 2^{56161520005152} is an apocalyptic number.

It is an amenable number.

56161520005152 is an abundant number, since it is smaller than the sum of its proper divisors (91400378594208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56161520005152 is a wasteful number, since it uses less digits than its factorization.

56161520005152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547256305 (or 547256297 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 39.

The spelling of 56161520005152 in words is "fifty-six trillion, one hundred sixty-one billion, five hundred twenty million, five thousand, one hundred fifty-two".